]>
Commit | Line | Data |
---|---|---|
85bcf27c MC |
1 | /* ==================================================================== |
2 | * Copyright (c) 1998-2014 The OpenSSL Project. All rights reserved. | |
3 | * | |
4 | * Redistribution and use in source and binary forms, with or without | |
5 | * modification, are permitted provided that the following conditions | |
6 | * are met: | |
7 | * | |
8 | * 1. Redistributions of source code must retain the above copyright | |
0f113f3e | 9 | * notice, this list of conditions and the following disclaimer. |
85bcf27c MC |
10 | * |
11 | * 2. Redistributions in binary form must reproduce the above copyright | |
12 | * notice, this list of conditions and the following disclaimer in | |
13 | * the documentation and/or other materials provided with the | |
14 | * distribution. | |
15 | * | |
16 | * 3. All advertising materials mentioning features or use of this | |
17 | * software must display the following acknowledgment: | |
18 | * "This product includes software developed by the OpenSSL Project | |
19 | * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" | |
20 | * | |
21 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
22 | * endorse or promote products derived from this software without | |
23 | * prior written permission. For written permission, please contact | |
24 | * openssl-core@openssl.org. | |
25 | * | |
26 | * 5. Products derived from this software may not be called "OpenSSL" | |
27 | * nor may "OpenSSL" appear in their names without prior written | |
28 | * permission of the OpenSSL Project. | |
29 | * | |
30 | * 6. Redistributions of any form whatsoever must retain the following | |
31 | * acknowledgment: | |
32 | * "This product includes software developed by the OpenSSL Project | |
33 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" | |
34 | * | |
35 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
36 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
37 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
38 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
39 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
40 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
41 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
42 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
43 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
44 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
45 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
46 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
47 | * ==================================================================== | |
48 | * | |
49 | * This product includes cryptographic software written by Eric Young | |
50 | * (eay@cryptsoft.com). This product includes software written by Tim | |
51 | * Hudson (tjh@cryptsoft.com). | |
52 | * | |
53 | */ | |
54 | ||
55 | #ifndef HEADER_BN_INT_H | |
0f113f3e | 56 | # define HEADER_BN_INT_H |
85bcf27c | 57 | |
0f113f3e | 58 | # include <openssl/bn.h> |
85bcf27c MC |
59 | |
60 | #ifdef __cplusplus | |
61 | extern "C" { | |
62 | #endif | |
63 | ||
0f113f3e MC |
64 | # define bn_expand(a,bits) ((((((bits+BN_BITS2-1))/BN_BITS2)) <= (a)->dmax)?\ |
65 | (a):bn_expand2((a),(bits+BN_BITS2-1)/BN_BITS2)) | |
02a62d1a MC |
66 | BIGNUM *bn_wexpand(BIGNUM *a, int words); |
67 | BIGNUM *bn_expand2(BIGNUM *a, int words); | |
68 | ||
69 | void bn_correct_top(BIGNUM *a); | |
70 | ||
0f113f3e MC |
71 | /* |
72 | * Determine the modified width-(w+1) Non-Adjacent Form (wNAF) of 'scalar'. | |
73 | * This is an array r[] of values that are either zero or odd with an | |
74 | * absolute value less than 2^w satisfying scalar = \sum_j r[j]*2^j where at | |
75 | * most one of any w+1 consecutive digits is non-zero with the exception that | |
76 | * the most significant digit may be only w-1 zeros away from that next | |
77 | * non-zero digit. | |
85bcf27c MC |
78 | */ |
79 | signed char *bn_compute_wNAF(const BIGNUM *scalar, int w, size_t *ret_len); | |
80 | ||
81 | int bn_get_top(const BIGNUM *a); | |
82 | ||
83 | void bn_set_top(BIGNUM *a, int top); | |
84 | ||
85 | int bn_get_dmax(const BIGNUM *a); | |
86 | ||
87 | /* Set all words to zero */ | |
88 | void bn_set_all_zero(BIGNUM *a); | |
89 | ||
90 | /* | |
91 | * Copy the internal BIGNUM words into out which holds size elements (and size | |
92 | * must be bigger than top) | |
93 | */ | |
94 | int bn_copy_words(BN_ULONG *out, const BIGNUM *in, int size); | |
95 | ||
96 | BN_ULONG *bn_get_words(const BIGNUM *a); | |
97 | ||
98 | /* | |
99 | * Set the internal data words in a to point to words which contains size | |
100 | * elements. The BN_FLG_STATIC_DATA flag is set | |
101 | */ | |
102 | void bn_set_static_words(BIGNUM *a, BN_ULONG *words, int size); | |
103 | ||
104 | /* | |
105 | * Copy data into the BIGNUM. The caller must check that dmax is sufficient to | |
106 | * hold the data | |
107 | */ | |
108 | void bn_set_data(BIGNUM *a, const void *data, size_t size); | |
109 | ||
110 | size_t bn_sizeof_BIGNUM(void); | |
111 | ||
112 | /* | |
113 | * Return element el from an array of BIGNUMs starting at base (required | |
114 | * because callers do not know the size of BIGNUM at compilation time) | |
115 | */ | |
116 | BIGNUM *bn_array_el(BIGNUM *base, int el); | |
117 | ||
118 | ||
119 | #ifdef __cplusplus | |
120 | } | |
121 | #endif | |
122 | ||
123 | #endif |